Tagged Questions

Xcode is Apple's integrated development environment (IDE). USAGE NOTE: Use this tag only for questions about the Xcode IDE itself, and not for general Mac or iOS programming topics. Use [cocoa] for Mac programming questions, and [cocoa-touch] or [ios] for iOS programming questions.

I would like to perform the following in my app: When the app is launched for the first time, I would like it to measure the screen height and according to the result, download the specific textures ...

We were running into issues trying to add a test target to a project we inherited. The test target was working, however Running the app would always fail due to an error in the test target. We were ...

I have a question about png-8 vs png-24 usage vs Xcode's built in "image compressor".
Some images converted to png-8 are just fine saved like that, because difference between png-24 version can't be ...

Getting the updated frame with AutoLayouts it is a problem, that I know and been through it's solutions. All solutions are very much efficient but my problem has a limp.
Things I have done :
I have ...

I'm creating an iOS app and I wanted to include the launch images. I created the ressource using XCode in Images.xcassets but the ressource contains 20 different formats. Moreover, XCode doesn't allow ...

I have been trying to come out a solution for using swipe gesture to the right and makes the text on a label.text with strike through effect, swipe again to remove the strike through and leaves the ...

I need to create an action extension which can be used in conjunction with the iOS Safari app. When the user presses the action extension in Safari, I want my app to be launched and have the URL of ...

We are testing our app on several iPhone 6 Pluses, and at some point we are using GPUImage to capture some images. On my device, it works fine, but on my friend's device, it causes app to crash and ...

We have just started using Xcode Server for continuous integration.
Various developers and testers on our team are receiving the message "Cannot connect to server" when tapping the "Install" button ...

I'm using AV to record video via my app, and I have a button that swaps between the camera view being front and back camera, with back being the default. Switching from back to front works just fine. ...

I'm trying to convert my HTML5/Canvas webgame into a native iOS app. Due to a large number of audio files and Apple's infuriating memory leak issue when dealing with large amounts of audio (I'm using ...

I download the Facebook SDK and install it per the instructions (i.e. Download the SDK and install the package by following the wizard). Then I import the framework and edit the plist. Now when I try ...

I've been testing out the Silent Notification feature that is available since iOS 7.
My application is targeting iOS 7 and UP.
I'm testing on an iPhone6 device.
Everything seems to work great in my ...

I have written code to display a simple alert popup when a button is clicked. When trying the app in simulator iPhone 4s (8.1), it's working as expected, but when trying in simulator iPhone 4s (7.1), ...

I'm creating a UITableView with a list of the users contacts. I've successfully imported the list of contacts and am storing them within an array as a dictionary containing each contact's forename, ...

Whilst attempting to make/compile the grafic package, I'm seeing this error after calling the make command within the grafic directory:
f77 -O2 -c grafic1.f
make: f77: No such file or directory
make: ...

I am developing an app which uses simple pitch perception and it runs fine in the Xcode Simulator. The app loads in the iPhone 4 and I can navigate the app but no output is shown . I have started to ...

I am trying to get an alphabetical list of letters for different locales. Different locales use different letters, symbols and alphabetical orders and I'm creating a table view list with sections for ...

new to iOS development. I'll explain the core purpose, the app should display an array of images on a horizontally scrolling view, these images will be loaded from the app documents itself. But the ...

My app uses UDP to transmit signals through a socket but when the socket is closed I get an error when trying to reopen it. In Android changing from Datagram to Multicast did the trick but in IOS I'm ...